Alberta Premier Rachel Notley has said she’s willing to “turn off the taps” if B.C. doesn’t relent and allow the project to go forward or if the federal government doesn’t step in and force it to proceed. She did not specify a timeline.

Notley bowed out of a Western premier’s meeting this week, saying she didn’t think she could politely discuss pharmacare when one of the other premiers is trying to “choke the economic lifeblood” out of her province.

B.C. Attorney General David Eby said Tuesday the bill is meant to “punish” B.C., and that the court challenge comes after his government “failed” to convince Alberta to refer their law to the courts.

“A significant disruption in the supply of gasoline, diesel, and crude oil from Alberta to British Columbia would cause British Columbia irreparable harm,” the statement of claim reads.

Eby questioned why Alberta would take the time draft a law knowing that B.C. would challenge it, instead of referring the matter to a provincial or federal judge, as his government did.

“Why don’t we just go to the source?” he said.

The NDP filed a reference case in at the B.C. Court of Appeal last month to determine if it has jurisdiction to regulate heavy oil shipments. It also joined two other lawsuits launched by Indigenous groups opposed to the $7.4-billion project.